/*
   Copyright (c) 2011, 2012 Mizar Tools Contributors (mizartools.org)

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
/*  Contributors :
 *	2011-02-18 Marco Riccardi - initial implementation
 *  2012-04-06 Marco Riccardi - added message in DliParseException
 *
 */
package org.mizartools.dli;

import java.util.LinkedList;

public class Structure extends ItemDefinition {

	private LinkedList<Locus> locusList = new LinkedList<Locus>();
	private Prefices prefices = null;
	private Fields fields = null;
	
	private Structure(){
		super(null);
	}

    public Structure(LinkedList<Locus> locusList, Prefices prefices, Fields fields) throws DliException {
    	super(null);
		if (locusList == null){
			throw new DliException();
		}
		this.locusList = locusList;
		this.prefices = prefices;
		this.fields = fields;
    }
	
	public static ItemDefinition newInstance(String string) throws DliParseException {
		Structure structure = new Structure();
		int position = string.indexOf("(");
		if (position == -1) {
			throw new DliParseException("["+string+"] is not valid in Structure");
		}
		if (!string.substring(0, position).equals("struct")) {
			throw new DliParseException("["+string+"] is not valid in Structure");
		}
		string = string.substring(position+1, string.length()-1);
		int positionComma = Utility.searchSeparationComma(string);
		if (positionComma == -1) {
			throw new DliParseException("["+string+"] is not valid in Structure");
		}
		while (string.startsWith("$locus")) {
			structure.locusList.add(Locus.newInstance(string.substring(0, positionComma)));
			string = string.substring(positionComma+1, string.length());
			positionComma = Utility.searchSeparationComma(string);
		}
		if (string.startsWith("$prefices")){
			structure.prefices = Prefices.newInstance(string.substring(0, positionComma));
			string = string.substring(positionComma+1);
		} else {
			throw new DliParseException("["+string+"] is not valid in Structure");
		}
		positionComma = Utility.searchSeparationComma(string);
		if (string.startsWith("$fields") && positionComma == -1){
			structure.fields = Fields.newInstance(string);
		} else {
			throw new DliParseException("["+string+"] is not valid in Structure");
		}
		return structure;
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("struct(");
		boolean first = true;
		for (Locus locus : locusList){
			if (first) first = false;
			else sb.append(",");
			sb.append(locus.toString());
		}
		if (prefices != null){
			if (locusList.size()>0) {
				sb.append(",");
			}
			sb.append(prefices.toString());
		}
		if (fields != null){
			sb.append(",");
			sb.append(fields.toString());
		}
		sb.append(")");
		return sb.toString();
		
	}
	
}
